This document discusses the importance of collaboration in achieving sustainable development. It defines sustainable development according to the Brundtland Commission as meeting present needs without compromising future generations' ability to meet their own needs. A place-based approach is emphasized, considering environmental, social, economic factors and intra- and inter-generational equity. The Sustainable Communities model provides eight components for collaboration across sectors and places. Case studies illustrate collaboration principles through regeneration partnerships in North Liverpool, Stewartstown Road in Belfast, and the Resurgam Trust in Lisburn. Guiding principles stress shared vision, action, and resources through inclusive, long-lasting area-wide collaboration and capacity building.